move_and_strafe.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   move_and_strafe.c                                  :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kamitsui <kamitsui@student.42tokyo.jp>     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/15 13:47:13 by kamitsui          #+#    #+#             */
/*   Updated: 2024/10/20 11:23:25 by kamitsui         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "cub3d.h"
 
bool    is_through_wall(char **data, t_vector view_point, t_vector move_amount)
{
    int x;
    int y;
 
    x = (int)(view_point.x + move_amount.x);
    y = (int)(view_point.y + move_amount.y);
    if (data[y][x] == '1')
        return (true);
    return (false);
}
 
void    move_forward(t_map *map, t_player *player)
{
    t_vector    move_amount;
 
    move_amount.x = player->ray_dir.x * player->move_speed;
    move_amount.y = player->ray_dir.y * player->move_speed;
    if (is_collision_detection_x(
            map->data, player->view_point, move_amount.x) == false)
        player->view_point.x += move_amount.x;
    if (is_collision_detection_y(
            map->data, player->view_point, move_amount.y) == false)
        player->view_point.y += move_amount.y;
}
// No drift movement
//  if (is_through_wall(map->data, player->view_point, move_amount) == true)
//      return ;
 
void    move_backward(t_map *map, t_player *player)
{
    t_vector    move_amount;
 
    move_amount.x = - (player->ray_dir.x * player->move_speed);
    if (is_collision_detection_x(
            map->data, player->view_point, move_amount.x) == false)
        player->view_point.x += move_amount.x;
    move_amount.y = - (player->ray_dir.y * player->move_speed);
    if (is_collision_detection_y(
            map->data, player->view_point, move_amount.y) == false)
        player->view_point.y += move_amount.y;
}
 
void    strafe_left(t_map *map, t_player *player)
{
    t_vector    move_amount;
 
    move_amount.x = - (player->camera_forcal_plane.x * player->move_speed);
    if (is_collision_detection_x(
            map->data, player->view_point, move_amount.x) == false)
        player->view_point.x += move_amount.x;
    move_amount.y = - (player->camera_forcal_plane.y * player->move_speed);
    if (is_collision_detection_y(
            map->data, player->view_point, move_amount.y) == false)
        player->view_point.y += move_amount.y;
}
 
void    strafe_right(t_map *map, t_player *player)
{
    t_vector    move_amount;
 
    move_amount.x = player->camera_forcal_plane.x * player->move_speed;
    if (is_collision_detection_x(
            map->data, player->view_point, move_amount.x) == false)
        player->view_point.x += move_amount.x;
    move_amount.y = player->camera_forcal_plane.y * player->move_speed;
    if (is_collision_detection_y(
            map->data, player->view_point, move_amount.y) == false)
        player->view_point.y += move_amount.y;
}